My understanding (and I Googled it to confirm)is that safes like the Sentry are primarily "fire safes" and work by using steam, from boiling liquid contained in the safe walls, to keep the inside of the safe at something less than 350 degrees. From what I've seen (I have a small Sentry safe too), the lock would not keep out a determined thief with a screwdriver. I don't even bother to lock it. It only contains papers I'd need after a fire and my passport.

I also have a small gun safe from GunVault (about $100) that is somewhat more secure and they'd have to take apart my bedroom to get any leverage to pry at it.

If the guns burn, the insurance will replace them. If a thief gets them, someone else might get hurt. Spend a few more bucks and get a decent gun safe and bolt it down where it can't be readily accessed to pry or hit, e.g. the back corner of the closet or under some immovable object.

I just had a house fire and lost all my guns and pretty much everything else....HOWEVER I did have a small $20 Sentry safe that had my car titles, SS cards, etc inside. It didn't get burnt or even very hot where it was, BUT it did have some water in it from the fire hoses. They shot 18-23,000 gallons if water on my house over a 4 hour period. So just a thought about safes.....water and fire wise. I've decided to definitely invest in a good safe this time, one with plenty of room for guns and all that "crap, that doesn't even need to be in there!" As my wife told me prior to the fire. FYI: all that crap in that safe is all I have left an wish I coulda had a lot more room in it! Water can get into any thing....especially when it's being sprayed with that much pressure behind it. There was 4" of water in the floor of my wife's closet and no, it wasn't lower than any other part of the floor, no basement, etc...